Cut-off lock.



W. O. REID.

CUT-OFF LQCK.

APPLICATION FILED JULY 29, I9I5- RENEWED IULY I3, 1916- 1,21 1,75

Patented Jan. 9,1917.

I grvucnto'r W. QREIU Hl l 1 v w w I U zll alwll" I WILLIAM OTHO REID, OF STRAWN, TEXAS.

CUT-OFF LOCK.

Application filed July 29, 1915, Serial No. 42,567. Renewed July 13,

To all whom it may concern Be it known that I, WILLIAM OTHO REID, a citizen of the United States, residing at Strawn, in the county of Palo Pinto and State of Texas, have invented certain new and useful Improvements in Out-Off Locks,

tion whereby of which the followlng is a specification.

The present invention relates to a gasolene cutoff for motor vehicles, and has for its object to provide a device of this character which embodies no el features of construethe flow of gasolenefrom the tank to the carbureter is controlled by a lock mechanism so that the vehicle can be left standing without danger of being stolen or used by an unauthorized person.

Further objects of the invention are to provide a cut-off mechanism of this character which can be readily interposed between the gasolene tank and the carbureter and mounted upon any conventional construction car, which is comparatively simple and inexpensive in its construction, ,which can be quickly locked or unlocked, and which when in a locked position completely cuts off the supply of gasolene to the carbureter so that it is impossible to move the car under its own power.

With these and other objects in view,the

invention consists in certain novel combinations and arrangements of the parts as will more fully appear as the description proceeds, the novel features thereof being pointed out in the appended claims.

, For a full understanding of the invention, reference is to be had to the following descrlption and accompanying drawing, in which Figure 1 is a fragmentary longitudinal sectional view through an automobile, showing the in side e taken on the line 22 of Fig. 1. Fig. 3 is a longitudinal sectional view through the valve.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawing by the same reference characters.

Specification of Letters Patent.

. the" length a the is in. communication asolene cut-oil lock applied thereto evation. Fig. 2 is a transverse sectional view through the valve and lock box,

Patented Jan. 9, 1917. Serial No. 109,195.

supply pipe 4: at a convenient position is the casing 5 of a cut-off valve. The inlet end 5 of the valve casing 5 with the gasolene tank, w h1le the outlet end 5 thereof is in communlcation with the carburetor. The interior of the valve casing isiormed with a tapered or wedge shaped valve chamber 6 arranged at right angles to the passage through the valve casing and communicating with the inlet and outlet openings thereof. A tapered valve 7 is mounted to reciprocate within the valve chamber 6 and has a shape orresponding to that of the valve chamber. When the valve is moved upwardly so as to be seated against the walls of the valve chamber the inlet and outlet openings of the valve casing are closed and the flow of gasolene through the valve shut off. The bottom of the valve casing 5 is formed with a drain opening which is normally closed by a removable plug 8, and'a coil spring 9 is interposed between the removable plug and the valve 7 fornormally holding the latter in a closed position. A cap 10 is threaded in the top of the casing 5 so as to close the same,

said cap being formed with a tubular stand' no leakage above the packing ring. The up per end of the valve stem 12 has a collar or washer member 15 at the upper end thereof, and a coil spring 16 which surrounds the Valve stem is interposed between the said collar and the packing ring 14. This spring 16 cooperates with the before mentioned spring 9 to hold the valve 7 yieldably in a closed position. When it is desired to remove the valve 7 for any purpose, the collar 15 is detached from the upper end of the valve stem 12 and the plug 8 unscrewed from the opening in the bottom of the valve casing. The valve 7 and valve stem 12 can then be readily withdrawn through the bottom of the valve casing.

Mounted in a suitable position upon the through the packing box. The upper end of the plunger 19'term1nates in a head 20, while the lower end thereof projects into the upper end of the tubular standard 11 so as to engage the valve stem 12 when the plunger is depressed. A gland 21 is shown as fitted in the upper end of the packing box 18, and a coil spring 22 is interposed between the gland and the head so as to normally hold the plunger in an elevated and inoperative position. The valve 7 is normally held in a closed position by the combined action of the coil springs 9 and 16, although when the plunger 19 is forced downwardly against the action of the spring 22, the valve 7 is moved downwardly into an open position. Communication between the gasolene tank and the carbureter is then unobstructed so that ,the engine will receive a continuous supply of the combustible mixture after being started. v

An operating lever 23 is pivotally mount ed within the lockbox 17, one end of the However,

said lever being hinged at 24 to the bottom ofthe lock box, while the opposite end thereof is inclined upwardly toward the top of the lock box, and rests upon the head 20 at the top of the plunger 19. A locking slide 25 extends through one end of the lock box 17, the inner end thereof being provided at the top thereof with a roller 26 for engage: ment with the top of the lock box 17, and at the bottom thereof with a roller 27 for. en-

gagement with the operating lever 23. The locking slide movesin a position parallel to the top of the lock box 17 and at an angle to the lever 23, so that when the locking slide is forced inwardly the roller 27 swings the op- ],erating lever 23 downwardly and depresses the plunger 19 so as to open the cut-off valve. when the locking slide 25 is moved outwardly the operating lever 23 is released and the plunger 19 moved upwardly by the action of the spring 22, the cut-off valve 7 being simultaneously seated by the combined action of the springs 9 and 16.

A suitable lever 28 may be provided upon the exterior ofthe lock box 17 for convenience in manipulating the locking slide 25, the said lever being shown as having a pin and slot connection 2-9 with the outer end of the said locking slide. It will also be observed that the locking slide is formed with a pair-of notches 30 which are adapted to cooperate with the bolt 31 of a key controlled lock 32 for the purpose of locking the slide in either an operative or an inoperative position. When the motor vehicle is in use the slide 25 is pushed inwardly so as to open the cut-off valve 7 and lock it in an operative position. However, when the motor vehicle is not in use, orv it is desired to leave the same standing, the slide 25 is pulled outwardly isnO fl0W of gasolene from the tank to the carbureter, and the vehicle can not be moved under its own power. The lock box or casing 17 can be placed in any convenient position upon the dashboard of the vehicle, and it is impossible to tamper with the cut-off or change the adjustment thereof without the proper key for operating the lock 32. After the mechanism has been set to leave the cutofi valve in a closed position, the vehicle can be left standing without danger of being stolen or used by joy-riders, and it is impossible to change the adjustment without the proper key for manipulating the lock 32.

Having thus described the invention,what

I claim as new and desire to secure by Letters Patent, is

1. A gasolene cut-off for internal combustion engines, including a cut-oflf valve interposed between the gasolene tank and the carbureter, a plunger, an operative connection between the plunger and the cut-off valve, an'inclined lever pivoted at one end thereof, the free end of the inclined lever engaging the plunger, a locking slide cooperating with the inclined lever to control the plunger, and means for holding the locking slide in adjusted positions.

2. A gasolenecut-ofi for internal combustion engines, including a cut-01f valve interposed between the gasolene tank and the carbureter, a lock box, a plunger projecting into the lock box, an operative connection between the plunger and the cut-off valve, an inclined leverengaging the plunger, a locking slide mounted within the lock box and. cooperating with the inclined lever to control the plunger, and means for holding the locking slide in adjusted positions.

3. A gasolene cut-off for internal combustion engines, including a cut-off valve interposed between the gasolene tank and the carnection with the cut-off valve, an inclined lever arranged within the lock box and engaging the plunger, a locking slide mounted within the lock box and provided with antifriction rollers engaging an interior wall of the lock box and the inclined lever so that by manipulating the operating slide the lever can be moved to control the plunger, and means for holding the locking slide in ad justed positions. 4. A gasolene cut-01f for internal combustion engines, including a valve casing interposed between the gasolene tank and the carbureter, a reciprocating cut-off valve mounted within the valve casing,-a tubular standstem connected to the valve and extending loosely through the tubular standard, a

. spring normally holding the valve in a closed position, a plunger mounted in alinement with the valve stem and adapted to'engage ring and normally holding the valve in a i I the same to open the valve, a swinging lever closed-position, a lock box, a plunger pro- 20 engagingthe plunger, a locking slide mountjeeting into the lock box and arranged in e for cofiperation with the swinging lever alinement with the valve stem so as to ento. control the plunger, and means for holdgage the same to open the valve, "an inclined ing the locking slide in adjusted positions. lever engaging the plunger, a locking slide- 5. A 'gasolene cut-ofi' for internal combusmounted to move at an angle to the inclined 25 tion engines, including a valve casing interlever, a'roller upon the locking slide for enposed between the gasolene tank and the cargagement with the. inclined lever to move bureter, a reciprocating cut-ofl valve mountthe same and control the plunger, and means ed within the valve casing, a tubular standfor holding the locking slide inadjusted poard projecting from the valve casing, a valve sitions' V stem connected to the valve and passing In testimony whereof I aifix mysignature loosely through the tubular standard, apackin the presence oftwo witnesses.

ing ring arranged within the tubular stand- 'WILLIAM OTHO REID.

ard and tightly engaging the valve stem, a Witnesses:

. collar upon the valve stem, a spring inter- J. E. Gunsmg posed between the collar and the packing I J m. A. WATSON. 

